Low temperature behaviour of TiO2 rutile as negative electrode material for lithium-ion batteries

M. Marinaro, M. Pfanzelt, P. Kubiak, R. Marassi, M. Wohlfahrt-Mehrens

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40 Citations (Scopus)

Abstract

High surface nanosized rutile TiO2 is prepared via a sol-gel method from an ethylene glycol-based titanium-precursor in the presence of a non-ionic surfactant, at pH 0. Its electrochemical behaviour has been investigated at low temperature using two different potential windows. Typically, the potential window of the rutile system is 1-3 V but the use of an enlarged potential window (0.1-3 V), leads to an excellent reversible capacity of 341 mAh g-1 which is comparable to graphite anodes. The electrochemical performance was investigated by cyclic voltammetry and galvanostatic techniques at temperatures ranging from -40 to 20 °C. Nanosized TiO2 exhibits excellent rate capability (341 mAh g -1 at 20 °C, 197 mAh g-1 at -10 °C, 138 mAh g -1 at -20 °C, and 77 mAh g-1 at -40 °C at a C/5 rate) and good cycling stability. The superior low-temperature electrochemical performance of nanosized rutile TiO2 may make it a promising candidate as lithium-ion battery material.

Original languageEnglish
Pages (from-to)9825-9829
Number of pages5
JournalJournal of Power Sources
Volume196
Issue number22
DOIs
Publication statusPublished - 15 Nov 2011

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Keywords

  • Lithium insertion
  • Low temperature performance
  • Nanosized rutile TiO

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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